[test] lazily parse css style rules

third_party/WebKit/Source/core/css/parser/CSSTokenizer.cpp

Index: third_party/WebKit/Source/core/css/parser/CSSTokenizer.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSTokenizer.cpp b/third_party/WebKit/Source/core/css/parser/CSSTokenizer.cpp
index 282bc3a549d9c0d555051d870bdcb76200bae74e..e2e70aa177ad6a9ace4390a37ba17a8c55e2c84e 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSTokenizer.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSTokenizer.cpp
@@ -18,7 +18,6 @@ namespace blink {
 namespace blink {
 
 CSSTokenizer::Scope::Scope(const String& string)
-: m_string(string)
 {
     // According to the spec, we should perform preprocessing here.
     // See: http://dev.w3.org/csswg/css-syntax/#input-preprocessing
@@ -30,6 +29,7 @@ CSSTokenizer::Scope::Scope(const String& string)
 
     if (string.isEmpty())
         return;
+    storeString(string);
 
     // To avoid resizing we err on the side of reserving too much space.
     // Most strings we tokenize have about 3.5 to 5 characters per token.
@@ -48,10 +48,10 @@ CSSTokenizer::Scope::Scope(const String& string)
 }
 
 CSSTokenizer::Scope::Scope(const String& string, CSSParserObserverWrapper& wrapper)
-: m_string(string)
 {
     if (string.isEmpty())
         return;
+    storeString(string);
 
     CSSTokenizerInputStream input(string);
     CSSTokenizer tokenizer(input, *this);